Preparation and Characterization of Graphene Oxide-Grafted Hexadecanol Composite Phase-Change Material for Thermal Energy Storage

doi:10.1002/ente.201700148

CORC > 兰州理工大学 > 兰州理工大学 > 石油化工学院

	Preparation and Characterization of Graphene Oxide-Grafted Hexadecanol Composite Phase-Change Material for Thermal Energy Storage
	Wang, Yi; Liu, Zhou; Zhang, Ting; Zhang, Zhengfei
刊名	ENERGY TECHNOLOGY
	2017-11
卷号	5 期号:11 页码:2005-2014
关键词	composite materials graphene phase change materials surface chemistry thermal energy storage
ISSN号	2194-4288
DOI	10.1002/ente.201700148
英文摘要	With the aim of improving the shape stability and recycling reliability of hexadecanol (HD), graphene oxide (GO)-grafted hexadecanol (GO-g-HD) shape-stabilized phase-change material (SSPCM) with good thermochemical properties was prepared by oxidizing graphite powders to form GO, which was converted into the acyl chloride and finally condensed with HD. Various characterization techniques were employed to investigate the microstructure, thermal properties, thermal durability, and reliability of the composite. The results show that HD was embedded in the composite with a maximum mass fraction of 62.7 wt% through physical adsorption and covalent bonding. The grafted percentage and density of HD on ultrathin GO sheets are 36.5 wt% and 1.51 mmol g(-1) respectively. The GO-g-HD SSPCM melts at 49.7 degrees C with a latent heat of 152.3 J g(-1), and freezes at 45.4 degrees C with a phase-change enthalpy of 129.9 J g(-1). The thermal conductivity of GO-g-HD is measured as 0.519 Wm(-1) K-1, which is an improvement of 41.8% compared with that of neat HD. Moreover, the as-prepared composite also presents excellent chemical and thermal stability, excellent thermal durability, negligible variation in latent heats, and no changes in the phase-change temperatures due to strong covalent bonds and interactions between the matrix and HD. Thus, GO-g-HD is a promising candidate for thermal energy storage in the future because of the very good latent heat, enhanced conductivity, and stability.
资助项目	National Natural Science Foundation of China[51562023] ; Natural Science Foundation of Gansu Province[145RJZA185]
WOS研究方向	Energy & Fuels
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000417576700013
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/33028]
专题	石油化工学院
通讯作者	Wang, Yi
作者单位	Lanzhou Univ Technol, Coll Petrochem Technol, 36 Pengjiaping Rd, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Wang, Yi,Liu, Zhou,Zhang, Ting,et al. Preparation and Characterization of Graphene Oxide-Grafted Hexadecanol Composite Phase-Change Material for Thermal Energy Storage[J]. ENERGY TECHNOLOGY,2017,5(11):2005-2014.
APA	Wang, Yi,Liu, Zhou,Zhang, Ting,&Zhang, Zhengfei.(2017).Preparation and Characterization of Graphene Oxide-Grafted Hexadecanol Composite Phase-Change Material for Thermal Energy Storage.ENERGY TECHNOLOGY,5(11),2005-2014.
MLA	Wang, Yi,et al."Preparation and Characterization of Graphene Oxide-Grafted Hexadecanol Composite Phase-Change Material for Thermal Energy Storage".ENERGY TECHNOLOGY 5.11(2017):2005-2014.